This post comes a bit late, so some of you may already have heard the news: KDE Edu will ship a new application in 4.4: Cantor*.

Cantor is an application that lets you use your favorite mathematical applications from within a nice KDE-integrated Worksheet Interface, and offers assistant dialogs for commonly used functions like solving equations or integrating/differentiating a function. It currently has support for three Backends Sage, Maxima and R.

It is aimed to fill the gap, most free software math packages have, compared to proprietary systems: an intuitive to use graphical interface.